Question about High school GPA

<p>First I am not sure where this post belongs, so can the forum moderators move the post if necessary.
I currently have about a 85% UW high school grade point average. I am unsure where a 85% goes into a 4.0 GPA system. I see conversion charts placing a 85% average form a 2.6 GPA to a 3.5 GPA.
How do you calculate a 85% into a 4.0 GPA scale?</p>

<p>In my school, that would be a 3.5 GPA on a 4.0 scale (unweighted)
80%=B-/3.0
90%=A-/4.0
85%=B/3.5
Hope that helps!</p>